diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_eth_soc.c | 36 | ||||
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_eth_soc.h | 3 |
2 files changed, 38 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 4574332..522fe8d 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -145,6 +145,9 @@ static void mtk_phy_link_adjust(struct net_device *dev) MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN | MAC_MCR_BACKPR_EN; + if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) + return; + switch (mac->phy_dev->speed) { case SPEED_1000: mcr |= MAC_MCR_SPEED_1000; @@ -370,6 +373,9 @@ static int mtk_set_mac_address(struct net_device *dev, void *p) if (ret) return ret; + if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) + return -EBUSY; + spin_lock_bh(&mac->hw->page_lock); mtk_w32(mac->hw, (macaddr[0] << 8) | macaddr[1], MTK_GDMA_MAC_ADRH(mac->id)); @@ -770,6 +776,9 @@ static int mtk_start_xmit(struct sk_buff *skb, struct net_device *dev) */ spin_lock(ð->page_lock); + if (unlikely(test_bit(MTK_RESETTING, ð->state))) + goto drop; + tx_num = mtk_cal_txd_req(skb); if (unlikely(atomic_read(&ring->free_count) <= tx_num)) { mtk_stop_queue(eth); @@ -842,6 +851,9 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, netdev = eth->netdev[mac]; + if (unlikely(test_bit(MTK_RESETTING, ð->state))) + goto release_desc; + /* alloc new buffer */ new_data = napi_alloc_frag(ring->frag_size); if (unlikely(!new_data)) { @@ -1576,6 +1588,12 @@ static void mtk_pending_work(struct work_struct *work) rtnl_lock(); + dev_dbg(eth->dev, "[%s][%d] reset\n", __func__, __LINE__); + + while (test_and_set_bit_lock(MTK_RESETTING, ð->state)) + cpu_relax(); + + dev_dbg(eth->dev, "[%s][%d] mtk_stop starts\n", __func__, __LINE__); /* stop all devices to make sure that dma is properly shut down */ for (i = 0; i < MTK_MAC_COUNT; i++) { if (!eth->netdev[i]) @@ -1583,6 +1601,7 @@ static void mtk_pending_work(struct work_struct *work) mtk_stop(eth->netdev[i]); __set_bit(i, &restart); } + dev_dbg(eth->dev, "[%s][%d] mtk_stop ends\n", __func__, __LINE__); /* restart underlying hardware such as power, clock, pin mux * and the connected phy @@ -1615,6 +1634,11 @@ static void mtk_pending_work(struct work_struct *work) dev_close(eth->netdev[i]); } } + + dev_dbg(eth->dev, "[%s][%d] reset done\n", __func__, __LINE__); + + clear_bit_unlock(MTK_RESETTING, ð->state); + rtnl_unlock(); } @@ -1659,6 +1683,9 @@ static int mtk_get_settings(struct net_device *dev, struct mtk_mac *mac = netdev_priv(dev); int err; + if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) + return -EBUSY; + err = phy_read_status(mac->phy_dev); if (err) return -ENODEV; @@ -1709,6 +1736,9 @@ static int mtk_nway_reset(struct net_device *dev) { struct mtk_mac *mac = netdev_priv(dev); + if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) + return -EBUSY; + return genphy_restart_aneg(mac->phy_dev); } @@ -1717,6 +1747,9 @@ static u32 mtk_get_link(struct net_device *dev) struct mtk_mac *mac = netdev_priv(dev); int err; + if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) + return -EBUSY; + err = genphy_update_link(mac->phy_dev); if (err) return ethtool_op_get_link(dev); @@ -1757,6 +1790,9 @@ static void mtk_get_ethtool_stats(struct net_device *dev, unsigned int start; int i; + if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) + return; + if (netif_running(dev) && netif_device_present(dev)) { if (spin_trylock(&hwstats->stats_lock)) { mtk_stats_update_mac(mac); diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 7efa00f..79954b4 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -336,7 +336,8 @@ enum mtk_clks_map { }; enum mtk_dev_state { - MTK_HW_INIT + MTK_HW_INIT, + MTK_RESETTING }; /* struct mtk_tx_buf - This struct holds the pointers to the memory pointed at |